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A multi-source DC arc automatic nano-powder production system and method

A nano-powder and production system technology, which is applied in the field of multi-source DC arc automatic nano-powder production system, achieves the effects of novel structure, improving technical content and added value, and overcoming the unstable factors of powder quality

Active Publication Date: 2016-03-02
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] DC arc plasma is an effective heat source for the preparation of nanoparticles, especially "core / shell" metal (alloy) nanocomposite particles, carbon-related materials and ceramic nanomaterials. At present, this method has initially achieved mass production, but For large-scale industrial production, there are still many technical problems, mainly in how to collect a large amount of nano-powder products and realize online monitoring, processing, passivation and packaging

Method used

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  • A multi-source DC arc automatic nano-powder production system and method
  • A multi-source DC arc automatic nano-powder production system and method
  • A multi-source DC arc automatic nano-powder production system and method

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Embodiment 1

[0032] The material pure aluminum is processed into a rod with a diameter of 30mm. Its surface is smooth and conductive, and it is loaded into the electric transmission device of the anode to form a gap of 10mm with the cathode. There are multiple arc sources in the nano-powder generation chamber 1, and the iron rods are continuously supplied through the electric transmission device to realize the continuous production of the powder. After the whole production line is evacuated by mechanical pump and Roots pump, the cooling water is passed to cool the electrode, each chamber wall, vacuum pump 6, gas circulation pump 7 and gas pipe wall. According to 50% of the system pressure, the active gas hydrogen is introduced, and the rest is the condensed gas argon. Start the power supply, an arc is formed between the cathode and anode electrodes, the material begins to evaporate and form aluminum nano-powders, start the gas circulation pump) to realize the delivery of nano-powders to th...

Embodiment 2

[0034] The material pure iron is processed into a rod with a diameter of 30mm, which has a smooth surface and conductivity, and is loaded into the electric transmission device of the anode to form a gap of 10mm with the cathode. There are multiple arc sources in the nano-powder generation chamber 1, and the iron rods are continuously supplied through the electric transmission device to realize the continuous production of the powder. After the whole production line is evacuated by mechanical pump and Roots pump, the cooling water is passed to cool the electrode, each chamber wall, vacuum pump 6, gas circulation pump 7 and gas pipe wall. According to 40% of the system pressure, the active gas hydrogen is introduced, and the rest is the condensed gas argon. Start the power supply, an arc is formed between the cathode and anode electrodes, the material begins to evaporate and form aluminum nano-powders, start the gas circulation pump) to realize the delivery of nano-powders to th...

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Abstract

The invention discloses a multi-source direct-current arc automatic nano-powder production device and method and belongs to the technical field of nanometer material preparation. The device comprises a multi-electrode nano-powder generating chamber, a grading chamber, a trapping chamber, a processing chamber, a passivation chamber, a vacuumizing system, a gas circulating system, an electric transmission device, a hydraulic transmission device, a cooling system and the like, wherein the trapping chamber is an independent box and composed of an inverted-cone-shaped double-wall water cooling cavity, a trapping cage with the inner upper end closed, a closed filter element inner sleeve and a gas circulating circuit, the trapping cage and a filter element are composed of powder filtering materials and filter cloth, nano-powder deposited on the inner side and the outer side of the trapping cage can be removed by a rotating brush, a bottom conical outlet is connected with the nano-powder processing chamber, and a manual valve and an observation window are arranged. The trapping chamber and the processing chamber are connected through an isolation transition compartment. Due to the device and method, nano-powder can be automatically and continuously produced, the on-line detection function, the trapping function, the processing function, the passivation function and the packaging function are achieved, and the production efficiency and the quality of the products are improved.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and relates to a multi-source DC arc automatic nanometer powder production system and method. Background technique [0002] DC arc plasma is an effective heat source for the preparation of nanoparticles, especially "core / shell" metal (alloy) nanocomposite particles, carbon-related materials and ceramic nanomaterials. At present, this method has initially achieved mass production, but For large-scale industrial production, there are still many technical problems, mainly in how to collect a large amount of nano-powder products and realize online monitoring, processing, passivation and packaging. The present invention is based on Chinese patent technology: an automatic control DC arc metal nano powder production equipment and method. Patent No.: ZL200410021190.1, proposed a correction plan for the main problems of nano powder in the industrial production process, and proposed a nan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/14
Inventor 董星龙黄昊
Owner DALIAN UNIV OF TECH